------------[ cut here ]------------
WARNING: CPU: 1 PID: 6854 at kernel/rcu/tree_stall.h:993 rcu_check_gp_start_stall.part.0+0x1c4/0x4b0 kernel/rcu/tree_stall.h:993
Modules linked in:
CPU: 1 UID: 0 PID: 6854 Comm: syz.2.196 Not tainted 6.11.0-syzkaller-02574-ga430d95c5efa #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:rcu_check_gp_start_stall.part.0+0x1c4/0x4b0 kernel/rcu/tree_stall.h:993
Code: 88 61 01 00 00 be 04 00 00 00 48 c7 c7 c0 65 3c 9a e8 40 43 76 00 b8 01 00 00 00 87 05 d5 e9 c8 18 85 c0 0f 85 3d 01 00 00 90 <0f> 0b 90 48 81 fd c0 56 dc 8d 48 c7 c3 b8 f3 1d 90 74 5a 48 b8 00
RSP: 0018:ffffc90000a18df0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000002904 RCX: ffffffff81737be0
RDX: fffffbfff3478cb8 RSI: 0000000000000004 RDI: ffffffff9a3c65c0
RBP: ffffffff8ddc56c0 R08: 0000000000000001 R09: fffffbfff3478cb8
R10: 0000000000000003 R11: 0000000000000000 R12: 1ffffffff1b41e40
R13: 0000000000000246 R14: ffffffff8ddc56c0 R15: ffff8880b893fad2
FS:  00007f3dcad206c0(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020b0d000 CR3: 000000006b922000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 rcu_check_gp_start_stall kernel/rcu/tree_stall.h:956 [inline]
 rcu_core+0x4f2/0x16b0 kernel/rcu/tree.c:2838
 handle_softirqs+0x219/0x8f0 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu kernel/softirq.c:637 [inline]
 irq_exit_rcu+0xbb/0x120 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:finish_task_switch.isra.0+0x220/0xcc0 kernel/sched/core.c:5062
Code: a9 0a 00 00 44 8b 0d a7 81 c1 0e 45 85 c9 0f 85 c0 01 00 00 48 89 df e8 ae f8 ff ff e8 29 b0 36 00 fb 65 48 8b 1d 90 66 a7 7e <48> 8d bb f8 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc90002f2f718 EFLAGS: 00000206
RAX: 0000000000879b77 RBX: ffff888027c68000 RCX: 1ffffffff203af91
RDX: 0000000000000000 RSI: ffffffff8b4cdac0 RDI: ffffffff8bb10ca0
RBP: ffffc90002f2f760 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff901dc0df R11: 0000000000000000 R12: ffff8880b893f918
R13: ffff88801d2f8000 R14: ffff88807d209c80 R15: ffff8880b883eb80
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0xe3f/0x5490 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6621
 schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2557
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common+0x3e1/0x5f0 kernel/sched/completion.c:116
 rdmsr_safe_on_cpu+0x1de/0x210 arch/x86/lib/msr-smp.c:181
 msr_read+0x19e/0x250 arch/x86/kernel/msr.c:66
 vfs_read+0x1d1/0xbd0 fs/read_write.c:567
 ksys_read+0x12f/0x260 fs/read_write.c:712
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3dc9f7def9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3dcad20038 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f3dca135f80 RCX: 00007f3dc9f7def9
RDX: 7706c522012798af RSI: 0000000020001340 RDI: 0000000000000003
RBP: 00007f3dc9ff0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f3dca135f80 R15: 00007ffc1551eae8
 </TASK>
----------------
Code disassembly (best guess):
   0:	a9 0a 00 00 44       	test   $0x4400000a,%eax
   5:	8b 0d a7 81 c1 0e    	mov    0xec181a7(%rip),%ecx        # 0xec181b2
   b:	45 85 c9             	test   %r9d,%r9d
   e:	0f 85 c0 01 00 00    	jne    0x1d4
  14:	48 89 df             	mov    %rbx,%rdi
  17:	e8 ae f8 ff ff       	call   0xfffff8ca
  1c:	e8 29 b0 36 00       	call   0x36b04a
  21:	fb                   	sti
  22:	65 48 8b 1d 90 66 a7 	mov    %gs:0x7ea76690(%rip),%rbx        # 0x7ea766ba
  29:	7e
* 2a:	48 8d bb f8 15 00 00 	lea    0x15f8(%rbx),%rdi <-- trapping instruction
  31:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  38:	fc ff df
  3b:	48 89 fa             	mov    %rdi,%rdx
  3e:	48                   	rex.W
  3f:	c1                   	.byte 0xc1